Preheat the oven to 350 F. Butter an 8-inch square baking pan and line the bottom and sides with parchment paper.

In a bowl, mix together the flour, oats, sugar, brown sugar, salt,
baking soda and nuts. Mix in the melted butter until the oat mixture is
thoroughly combined. Press two-thirds of the mixture in an even layer
on the bottom of the pan. Use the back of the spoon to firmly press
& compact the mixture. Bake crust for 20 minutes.

While crust is baking prepare caramel filling. In a saucepan over
low heat, melt together caramels and cream until smooth, about 5
minutes. Let cool slightly. Remove crust from oven and let cool on
rack for 5 minutes. Sprinkle crust with chocolate chips and cover with
caramel sauce. Top with remaining crumb mixture.

Bake for 20-25 minutes until golden. Transfer the pan to a rack and
let cool completely. Store bars in an airtight container at room
temperature for up to a week.